48991555773 has 6 divisors (see below), whose sum is σ = 70765580574. Its totient is φ = 32661037176.

The previous prime is 48991555763. The next prime is 48991555787. The reversal of 48991555773 is 37755519984.

48991555773 is a `hidden beast` number, since 4 + 8 + 9 + 9 + 1 + 5 + 557 + 73 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37528213284 + 11463342489 = 193722^2 + 107067^2 .

It is not a de Polignac number, because 48991555773 - 2⁵ = 48991555741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 48991555773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48991555763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2721753090 + ... + 2721753107.

It is an arithmetic number, because the mean of its divisors is an integer number (11794263429).

Almost surely, 2^48991555773 is an apocalyptic number.

It is an amenable number.

48991555773 is a deficient number, since it is larger than the sum of its proper divisors (21774024801).

48991555773 is a wasteful number, since it uses less digits than its factorization.

48991555773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5443506203 (or 5443506200 counting only the distinct ones).

The product of its digits is 47628000, while the sum is 63.

The spelling of 48991555773 in words is "forty-eight billion, nine hundred ninety-one million, five hundred fifty-five thousand, seven hundred seventy-three".